U.S. Olympians Lolo Jones, Allyson Felix and LaShawn Merritt headline USA Track and Field Outdoor National Championships

NBC Sports Group and Universal Sports Network present live coverage of the USA Track & Field Outdoor Championships this weekend, beginning Friday, June 27, at 10 p.m. on NBCSN. The USATF Outdoor Championships in Sacramento is the final stop of the 2014 Outdoor USATF Championship Series, which also includes the Penn Relays and Drake Relays, the Prefontaine Classic, and the adidas Grand Prix.

Coverage of the USATF Outdoor Championships includes two-time Olympic gold medalist LaShawn Merritt competing in the men's 400m, and American record-holder and Olympic medalist Galen Rupp in the men's 10,000m.

Headlining the women's field is three-time Olympian Lolo Jones (two Summer Games and one Winter Games) in the 100m hurdles, four-time Olympic gold medalist Allyson Felix competing in the women's 100m, and Olympic gold medalist Jenn Suhr in the women's pole vault.

Tim Hutchings, Ato Boldon, Craig Masback, Lewis Johnson and Dwight Stones call the action from Hornet's Stadium in Sacramento.